Motion-picture machine.



I 4. A. DE vnv.

MOTON'PICTURE MACHINE. APPL ICAHON FILED MAR. 23. I916.

1,287,576. Patented Deb. 10, 1918.

3 SHEETSSHEET I.v

H. A. DE VRY.

MOTION PICTURE MACHINE.

APPLICAHON FILED MAR. 23 I916- Lggfifififi Patented Dec. 10, 1918.

3 SHEETS-SHEET 2.

' a l-n 1 H. A. DE VRY.

MOTION PICTURE MACHINE.

APPLICATION FILED MAR. 23. 1916.

1,287,576. Patented De0.10, 1918.

3 SHEETSSHEET 3- R L R lllllllll 1 k UNITED STATES PATENT OFFICE.

HERMAN A. DE VRY, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE DE VRYCORPORATION,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MOTION-PICTURE MACHINE.

Specification of Letters Patent.

Application filed March 23, 1916. Serial No, 86,073.

To all whom it may concern Be it known that I, HERMAN A. DE VRY, acitizen of the United States, and a resident of Chicago, in the countyof Cook and State of Illinois, have invented certain new and Inpractice, it has been found that when, in places where an incandescentlamp of very high candle power is necessary, the residual heat in thecase raises the temperature in the case to an objectionable degree. The

object of the present invention is to provide an improved machineinwhich provision is made for'forcibly and efficiently carrying of theheat to render the apparatus safe in operation, particularly when anincandescent lamp of high candle power is employed for projecting thepictures on the film.

A further object of the invention is to provide means for forciblycarrying away heat from the case without additional operating mechanism,and in the attainment of this object, the rotating shutter is utilizedto force theair through the objective opening in the case. I

The invention further designs to provide an improved portable projectingapparatus for motion pictures.

The invention consists in the several novel features hereinafter setforth and more particularly defined by claims at the conclusion hereof.

In the drawings: Figure 1 is a side elevation of a machine embodying theinvention the hinged cover being open and one side ofthe lamp box beingremoved. Fig. 2 is a horizontal section taken on line 22 of Fig. 1. Fig.3 is a transverse section through the case and lamp box on line 33 ofFig. 1. Fig. 4 is a central vertical section on line 4-4 of Fig. 2. T

The apparatus is inclosed within a rectangular case comprising a bottom9, a front 10, aback 11, a top 12, a fixed side-wall 14: and a cover 15hinged tothe back, as at 16,

so that it may be swung open for convenient access to all of themechanisms and devices in the case. The cover 15 forms one side 0. thecase. Film spools 18 and 19 are mounted side by side in the lowerportion of the case. spool 1.8 serving as a supply spool and spool 19 asa take-up for the exposed film.

A film-feeding mechanism is mounted in a frame 17 which is secured tothe fixed side 14 of the case. An electric motor A, securedon theback-Wall 11 of the case by posts 11 furnishes the power for driving thefilmfeed mechanism. The film-feed mechanism comprises a continuousfeed-sprocket 59 and a continuous take-up sprocket 61 both mounted on ashaft 88; an intermittent feedsprocket ;.a shutter-shaft 76; a pinion 92secured to the shutter-shaft and meshing with a pinion 93 on a shaft 94which is driven by a belt a and a belt-pulley 98 from the motor A; agear-train comprising a gear 91 on the shutter shaft and a gear 90 onthe continuous feed shaft 88. for driving the continuous feed sprockets;a shaft 80 provided with a belt pulley 85 for driving a belt 86 whichoperates the take-up spool 19; and a Geneva gear connection betweenshaft 94 and shaft 99 for intermittently operating the sprocket 60. Fromthe supply spool 18,-

and thence to the take-up spool 19. It will be understood that suitablerollers will be provided for guiding the film and for keeping it inengagement with the feed sprockets, but since the construction of theseform no part of the present invention, it is notdeemed necessary toillustrate and describe For a detailed lllustration them in detail, anddescription of these devices, reference may be had to an applicationfiled by me Aug. 16, 1915, Serial No. 45,633. The mechanism thus fardescribed exemplifies a film supply and take-up and film-feedingmechanism and a motor for operating said mechanism all inclosed withina-case and operatively connected together therein.

Suitable projecting lenses 73 are mounted I Patented Dec. 10, 1918.

in a tube .74 in .alinement with the picture opening 67 and an objectiveopening 77. A.

shutter '75 comprising a plurality of blades bottom,

is fixed to the front end of shaft 76 and is continuously rotated bysaid shaft. A plurality of these blades is provided to cut oil the lightduring the movement of the film and also to prevent flickering. Theseblades are angled relatively to the plane of rotation so that they willact as a fan to force air through the objective opening 77, aswell ascutting ofi' the passage of light through the fihn for a purposepresently set forth.

The lighting apparatus'comprises an incandescent electric lamp 10 heldin a lamp socket ii on a bracket 42 which is fixed to the back wall ofthe case. A tube d3 for the condensing lenses 4A is mounted in a.partition 24 between the film and the lamp. An electric switch 60 issecured to the back" 11 of the case and is electrically connected to thelamp socket 41 -and the motor A in manner well understood in the art.The lamp 40 is disposed in a box 50 in a compartment 24 formed in thecase between partition as and the back wall of the case. Motor A isdisposed in the lower portion of said compartment. The inside of thisbox is usually ainted white and comprises fixed out, back and top walls,all separated from the walls of the inclosing case to form an airpassage between the'box walls and the case-walls. This box is supportedby bracket 42, and posts 42 The sideof the box adjacent the cover isremovable to provide access to the lamp in the box when desired An airinlet to, over which extends screen or guard 4:1 is formed in thesidewall 1 1 of the case to admit air to the compartment 24 below thelamp-box. An air opening 65 is iformed in the top wall of the case abovethe lamp box, and a screen or guard 65 is secured over this opening.

Openings 54; are formed in the bottom oi the lamp-box for air to passfrom the com partment 24 into the lamp box. An opening 55 is formed inthe top of the lamp box. The purpose of these openings is to provide apassage for air. p v

Motor A is provided with a fan a disposed adjacent air-inlet 45. Thisfan will be operated while the machine is in operation and forces airentering compartment 24 at inlet 45, through openings 54 into thelamp-box. This air' passesaround the lamp and forces the heat throughopenings 55, 65, to the outside of the case. Air is also forced aroundthe outside of the lamp-box to the outlet 65. An opening 56 is formed inthe case to admit air to the main compartment of the case containingfeed mechanism, and the fan-blades of shutter 7 5 force air through the,objective opening 77. These forced currents of air serve to eificientlykeep the case and its contents cool and render safe the operation or thefilm in close proximity to the lamp contained in the case.

ses me This apparatus exemplifies one in which air isforced through thecase containing the lamp to carry ed heat from the lamp and to preventall of the parts from becoming unduly heated. The inventionalsoexemplifies a machine in' which cooling is efiected by the shutter. Theinvention is particularly advantageous in a portable machine in which itis desired to have the inclosing case as small as possible and in whicha lamp of exceptionall high candle power is necessary. J

The operation of the shutter and film feeding mechanism will be asfollows: Motor A. will operate the belt a to drive pulley 98 and itsshaft 9e continuously. Gear 93 on shaft 94, meshing with gear 92, wiloperate the shutter shaft 7 6 continuously. The intermittent drivingconnection between the pulley 98 and sprocket 60 will serve to operatesaid sprocket to feed the film intermittently across the exposureopening 67. Gear 91 on the continuously rotating shaft 76 meshing withgear 90 will operate the continuous feed sprocket 59 and the take-upsprocket 61 continuously. Gear 89 meshing with gear 87 on shaft willrotate pulley 85 to operate the belt 86 for operating the.

take-up spool. During the operation of the machine, the fan a andshutter 75 will operate to force air-currents through the case to carryofi' heat from the lamp.

The invention is not to-be understood as driving means and box, andmeans for forcing a current of air through and around the outside ofsaid box.

2. in a moving picture machine, the combination of a film supply,film-feed mechanism, means for driving said mechanism, illuminatingmeans, a box around said illuminating means, a portable carrying casecontaining said supply, feed mechanism,

driving means and box, said case, and box each having inlet and outletopenings therein, and means for forcing a current of air through saidopenings. I

3. in a moving picture machine, the combination of a film supply,film-feed mecha-. nism, means for driving said mechanism, illuminatingmeans, a box around said illuminating means, a portable carrying casehaving an air opening mitsitop and conilluminating means,

taining said supply, feed mechanism, driving means and box, and meansfor forcing a current of air through said box and dis charging itthrough said opening.

4. In a moving picture machine, the combination of a film supply,film-feed mechanism, means for driving said mechanism, a box around saidilluminating means having an air inlet and an outlet, a portablecarrying case having an ope g in its top and containing said supply,feed mechanism, driving means and box, and means operated by saiddriving means for forcing a current of air through and around theoutside of said box and discharging it through said top opening.

5. In a moving picture machine, the combination of a film supply,film-feed mechanism, means for driving said mechanism, illuminatingmeans, a rotating shutter operated by said mechanism, a portablecarrying case containing said supply, feed mechanism, driving means,illuminating means and shutter, a fan operated by said driving mechanismfor forcing a current of air around the lamp and through one portion ofthe case, said shutter having fan blades adapted to force air throughanother portion of the case.

6. In a moving picture machine, the combination of a film supply,film-feed mechanism, means for driving said mechanism, illuminatingmeans, a rotating shutter 0perated by said mechanism, a case dividedinto separate compartments, one or which contains said supply and feedmechanism, means and shutter, the other containing the illuminatingmeans, a fan operated by said driving mechanism for forcing a current ofair around the lamp and through one compartment, said shutter having fanblades adapted to force air through the other compartment.

HERMAN A. on VRY.

